Systems and methods for operatively coupling a micro-grid to a bulk grid
US-10797488-B2 · Oct 6, 2020 · US
Arrangements for connecting networks of the same frequency but supplied from different sources
Arrangements for connecting networks of the same frequency but supplied from different sources · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H02J3/04 |
| Official title | Arrangements for connecting networks of the same frequency but supplied from different sources |
| Display label | Arrangements for connecting networks of the same frequency but supplied from different sources |
| Total patents | 218 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 8 |
| 2017 | 8 |
| 2018 | 10 |
| 2019 | 14 |
| 2020 | 16 |
| 2021 | 13 |
| 2022 | 27 |
| 2023 | 34 |
| 2024 | 36 |
| 2025 | 31 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electric vehicle charging device and method for charging electric vehicle
US-10752123-B2 · Aug 25, 2020 · US
Modular direct current (dc) architectures
US-2020266625-A1 · Aug 20, 2020 · US
Modular direct current (dc) architectures
US-2020203948-A1 · Jun 25, 2020 · US
Dynamic frequency control in power networks
US-10673232-B2 · Jun 2, 2020 · US
Systems And Methods For Energy Crowdsourcing And Peer-To-Peer Energy Trading
US-2020161858-A1 · May 21, 2020 · US
Modular direct current (DC) architectures
US-10587115-B2 · Mar 10, 2020 · US
Modular generator control and external power unit
US-10534340-B2 · Jan 14, 2020 · US
Electric vehicle charging device and method for charging electric vehicle
US-2019375307-A1 · Dec 12, 2019 · US
Combined power generation system
US-2019334352-A1 · Oct 31, 2019 · US
Smart function block for integration of PLCS into a control system and methods for the same
US-10447078-B2 · Oct 15, 2019 · US
Microgrids with dynamically configurable boundaries including multiple main grid feeder coupling locations and methods of operating the same
US-10447038-B2 · Oct 15, 2019 · US
Method for monitoring an electrical network
US-2019302158-A1 · Oct 3, 2019 · US
Power control of inverters of a photovoltaic facility in order to participate in frequency regulation of the electrical distribution network
US-2019305561-A1 · Oct 3, 2019 · US
Electric vehicle charging device and method for charging electric vehicle
US-10427548-B2 · Oct 1, 2019 · US
Method For Power Supply And Power Supply For Railway Operating Elements Arranged On A Railway Line
US-2019291756-A1 · Sep 26, 2019 · US
Motor train unit auxiliary power supply apparatus
US-10411503-B2 · Sep 10, 2019 · US
Method for operating an entire energy supply network in an energy generation decentralized manner
US-10348091-B2 · Jul 9, 2019 · US
Power control apparatus and power control method
US-2019173289-A1 · Jun 6, 2019 · US
Microgrids with dynamically configurable boundaries including multiple main grid feeder coupling locations and methods of operating the same
US-2019148941-A1 · May 16, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H02J3/04?
- CPC H02J3/04 is the Cooperative Patent Classification code for “Arrangements for connecting networks of the same frequency but supplied from different sources.”
- How many patents are filed under CPC H02J3/04 (Arrangements for connecting networks of the same frequency but supplied from different sources)?
- Our database includes 218 publications tagged with this CPC code.
- Is patent activity under CPC H02J3/04 growing?
- Publication counts under this code: 36 in 2024 vs 31 in 2025 (latest complete years).